Fostex FF85WK Size:83x83mm

KENAF Paper Cone Full Range

The FF-WK series utilises a double layer paper cone, consisting of a wood pulp fibre base and a KENAF paper surface layer. Which along with a dome shaped aluminium centre cap and pocket neck damper, ensures a fast, realistic high quality sound throughout the range.

Exclusively designed for use in bass reflex enclosures, the FF-WK series offers designers a chance to use a full range drive unit in a relatively small cabinet, without compromising on sound quality.

A cabinet kit is available for the FF85WK

Technical Data:

Frame size:    83 x 83mm

Sensitivity (2.83v/1m):   86.5dB

Nominal impedance:   8 ohm

Frequency range:   115Hz - 28000Hz

Free air resonance:   115Hz

DC resistance (Re):   7.2 ohm

Voice coil inductance (Le):   0.032mH

Effective piston area (Sd):  0.0028m²

Moving Mass (Md):   2.0g

Force factor (BL):   3.93 Telsa/m

Qts:   0.55

Qms:   3.298

Qes:   0.683

Vas:   1.036L

Excursion (lin-max):   0.35mm

Nominal power handling:   5w

Music power:   15w

Physical Sizes:

Frame size:   83 x 83mm

Overall depth (front of frame to rear of magnet):   48mm

Flange thickness:   3.4mm

Fixing holes:   4 x 4mm diameter on 86mm PCD

Cutout diameter:   73mm

Price per single unit excluding VAT